2013 Five Boro Bike Tour

More than 32,000 cyclists zoomed through all five New York City boroughs Sunday as part of the TD Five Boro Bike Tour amid increased security -- a result of the bombings at the Boston Marathon last month.

The tigher-than-usual security was evident at many points along the 40-mile ride -- the 36th year of what is now the largest cycling event in the United States.

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